SechoDB, trekking through tech...

Method 2 : Using Mac Drive Pro from BootCamp to fix and recover data. If you are using BootCamp on your Mac to dual-boot Windows which is loading fine after disk corruption, you can use the Windows utility Mac Drive Pro to recover data from corrupted Mac volume and even fix issues with it.

In my case the disk corruption also prevented Windows from booting, using Method 1 fixed it and I was able to launch Windows.

Once inside Windows I used Mac Drive Pro to repair the Mac Volume and Mount it inside Windows Explorer for data recovery.

3.- While the above allowed me to backup my data from Mac Volume, it still did not fixed the Mac OS X boot and finally Method 3 worked fixing the Apple boot.